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Interparticle attraction affects what?

Answer and explanation

Correct answer: State and shape

The direct answer is A: interparticle attraction affects the state and shape of matter. Particles in every substance attract one another, but the strength of attraction and the amount of particle motion differ. In a solid, strong attraction keeps particles close in a fixed arrangement, so the solid has a fixed shape and volume. In a liquid, attraction is weaker relative to particle movement, so particles remain close but can slide, giving a fixed volume and no fixed shape. In a gas, particles are far apart and move freely, so the gas has neither fixed shape nor fixed volume. Option A is correct because attraction helps determine these physical properties. Option B is wrong because student marks depend on learning and assessment, not particle attraction. Option C is irrelevant; notebook colour is not determined by this molecular idea. Option D is wrong because sound pitch mainly depends on frequency, not simply on interparticle attraction. A useful cue is: strong attraction means particles stay close; weaker effective attraction allows more movement.

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Interparticle AttractionStateShape

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